I have the opposite problem, hehe. I'm actually want mine to have some pads on the surface for shade. I bought mine as an already growing plant, so no bulb. In the process it basically lost all but a single leaf, but that one has continued to grow up towards the top. It hasn't quite made it, but is close.
All the new ones are small and close to the base. Here is a picture after 19 days in my tank:
I just have a basic 18" T8 bulb, 8000K. I use Flourish once a week.
This is what it looked like when I bought it.